Note 10 - Leases - Lease Cost (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2019 USD ($)
Operating lease costs	$ 380	$ 1,103
Short-term lease costs	51	255
Total lease costs, included in selling and administrative expenses	$ 431	1,358
Operating cash flows – cash paid for operating lease liabilities		958
Non-cash – Operating lease ROU assets obtained in exchange for new lease liabilities		$ 729
Weighted-average remaining lease term (in years) (Year)	3 years 219 days	3 years 219 days
Weighted average discount rate	5.67%	5.67%